Seat structure for school desks



A ril 15, 1952 P. F. DOUGLAS 2,592,872

' SEAT STRUCTURE FOR SCHOOL DESKS Filed March 20, 1950 Patented Apr. 15,1952 UNITED STATES ATENT OFFICE SEAT STRUCTURE FOR SCHOOL DESKS PhilipF. Douglas, Carman, Manitoba, Canada Application March 20, 1950, SerialNo. 150,587 In Canada March 24, 1949 tieth day of November 1937, andsaid improve-' ment is directed particularly to the mounting of the deskseat, with the object of providing an arrangement which will withstandhard usage to which the parts of the arrangement are subjected in everyday use and in a structure that can be produced at relatively low cost,readily assembled and is not unsightly.

With the above object in view, the invention consists essentially in thearrangement and construction of parts hereinafter described, referencebeing had to the accompanying drawin in which:

Fig. l is a perspective view of part of a school desk and showing theseat mounting, the seat appearing in up or not in use position.

Fig. 2 is a view similar to Fig. l with the seat in down or usedposition.

Fig. 3 is a side view showing the seat mounting as a whole.

Fig. 4 is a vertical sectional view at 4-4 Fig. 3.

In the drawing like characters of reference indicate corresponding partsin the several figures.

The desk embodies similar side frames l and 2 of cast metal utilized tosupport the desk top, back rest and seat, the back rest 3 and seat 4being herein shown. The frames terminate in front and rear legs 5 and 6and are provided forwardly with integrally formed, upstanding, seatsupporting arms I, the structural details of which will be laterdescribed.

It will be observed that each skeleton side frame presents outstandingcontinuous flanges 8 to which the desk top and back rest can be readilybolted and said flanges also serve to reinforce the frames and giverigidity to the assembled structure.

The side frames are connected together by a relatively long bolt 9 inthe same manner as shown in the patent hereinbefore referred to.

The arm 1, in each instance, is spaced forwardly from the upgoing backrest engaging portion of the frame to provide a clearance space II] forthe rear edge of the upturned seat and the flange 8 hereinbeforementioned borders the arm and presents a horizontal portion 8' which isused as a stop for the seat in its down or in use position. Each arm isalso supplied with an integrally formed, horizontally disposed bearingsleeve I! which is utilized to receive a pivot pin shortly referred to.

The seat 4, which is of the usual curved form for comfortable seating,has two similar vertically disposed brackets I2 secured thereto bycountersunk bolts I3 and each bracket presents an outstanding horizontalflange I2 through which the latter bolts pass. The seat attachedbrackets are located immediately to the inner sides of the arms I sothat in the down position of the seat,

the flanges I2 of the brackets engage the flangeportions 8' of the arms.The flange I2 is fashioned to follow the contour of the seat. Eachbracket is formed with an outstanding, integral, horizontally disposedpivot pin I4 which is adapted to enter and become pivotally received inthe bearing sleeve H of the adjacent side frame.

It will be obvious that the pivot pins can be readily entered in thebearing sleeves when the desk is bein assembled and prior to fasteningup the bolt 9. It will be also noted that the pivot pins are relativelylarge in diameter so that they give ample bearing area in the sleeves,which is important as desk seat bearings are subjected to very hard andrough usage.

I wish now to refer to Fig. 3 and to point out particularly that whenthe seat is down or in used position, as shown, I have the wearresisting metals of flanges 8 and I2 in contact and the points ofcontact well in advance of a vertical line passing centrally through thepivot pin it so that the load of a person seated on the seat in downposition, is for the greater part supported by the flanges l2 andabsorbed by the arms 7, thereby relieving the pivot pins I4 ofconsiderable thrust.

The large bearing area given the pins II insures of long life and thereis no part to work loose or cause trouble, such as would occur if nuttedbolts were employed for pivoting purposes, as is common practice.

I might mention that this desk can be supplied with the combination inkwell and pen and pencil holder as shown and described in the patenthereinbefore mentioned.

What I claim as my invention is:

In a school desk, interconnected, similar, skeleton side frames providedwith opposed, forward, upstanding arms in the plane of and spacedforwardly from the bodies of the frames and having the upper ends of thearms terminating in horizontal, outstanding flanges and the bodiesthereof provided with relatively large diameter, aligned bearing sleevesunderlying the flanges,

a pair of similar brackets positioned to the inner sides of the arms andprovided with integrally UNITED STATES PATENTS formed pivot pinsrotatably received within the Number Name Date sleeves and withoutstandin flanges engageable 74993 9 3, 1358 with the arm flanges and aseat secured to the 5 125,411 Rlter 1872 flanges 51 the brackets.370,554 Moore p 27, 1887 PHILIP F DOUGLAS 1,522,225 Birmingham Jan. 6,1925 FOREIGN PATENTS Country .iDate France Aug. 13, 1934 Great Britain1907 REFERENCES GITED T The following'references are of recor'd'in the mA file of this patent:

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